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1.发明公开公开(公告)号：US20230349881A1
公开(公告)日：2023-11-02
申请号：US18043616
申请日：2021-09-02
Applicant: Schlumberger Technology Corporation
Inventor： Melanie Jensen , Lalitha Venkataramanan , Sandip Bose , Peter Tilke , Oliver C. Mullins , Li Chen , Denise E. Freed
CPC classification number: G01N33/2823 , E21B49/081
Abstract: Processes and systems for determining asphaltene equilibrium between two or more downhole geographic locations are provided. In some embodiments, the process can include measuring one or more fluid properties of a plurality of fluid samples at varying downhole depths to generate a one or more downhole fluid analysis measurement data points; selecting an asphaltene diameter distribution based on prior knowledge; utilizing the asphaltene diameter distribution to fit a first set of one or more equation of state curves to the one or more downhole fluid analysis measurement data points to define a first model of fitted equation of state curves and to determine one or more posterior distributions of asphaltene diameters; and determining if the varying downhole depths are in an asphaltene equilibrium by determining whether the one or more posterior distributions of asphaltene diameters is consistent with that of asphaltenes in equilibrium.
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公开(公告)号：US20230349286A1
公开(公告)日：2023-11-02
申请号：US18245059
申请日：2021-09-13
Applicant: Schlumberger Technology Corporation
Inventor： Lei Jiang , Li Chen , Hua Yu , Adriaan Gisolf , Hadrien Dumont , Bilgin Altundas , Morten Kristensen
Abstract: A method can include receiving sensor data acquired using one or more downhole tool pressure gauges disposed in a borehole in a geologic formation responsive to a fluid operation, where the geologic formation includes a reservoir; and, for the fluid operation, using at least an infinite acting model, determining a distance of pressure influence in the geologic formation.
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公开(公告)号：US11725511B2
公开(公告)日：2023-08-15
申请号：US17460923
申请日：2021-08-30
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Christopher Harrison , Youxiang Zuo , Christopher Albert Babin , Li Chen , Vinay K. Mishra , German Garcia , Abhishek Agarwal , Matthew T. Sullivan
CPC classification number: E21B49/10 , E21B47/07 , E21B49/0875
Abstract: Methods for obtaining in-situ, multi-temperature measurements of fluid properties, such as saturation pressure and asphaltene onset pressure include obtaining a sample of formation fluid using a downhole acquisition tool positioned in a wellbore in a geological formation. The downhole acquisition tool may be stationed at a first depth in the wellbore that has an ambient first temperature. While stationed at the first depth, the downhole acquisition tool may test a first fluid property of the sample to obtain a first measurement point at approximately the first temperature. The downhole acquisition tool may be moved to a subsequent station at a new depth with an ambient second temperature, and another measurement point obtained at approximately the second temperature. From the measurement points, a temperature-dependent relationship of the first fluid property of the first formation fluid may be determined.
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公开(公告)号：US10941656B2
公开(公告)日：2021-03-09
申请号：US15887049
申请日：2018-02-02
Applicant: Schlumberger Technology Corporation
Inventor： German Garcia , Hadrien Dumont , Christopher Albert Babin , Li Chen , Vinay K. Mishra
Abstract: Apparatus and methods for performing downhole testing. Example apparatus include a downhole tool string for conveying within a wellbore, the downhole tool string comprising an anchor device, a testing device, and a linear or rotary actuator. The anchor device maintains a portion of the downhole tool string in a predetermined position within the wellbore. The testing device is operable to receive a downhole sample from or test a subterranean formation surrounding the wellbore. The linear actuator is connected between the anchor device and testing device, and moves the testing device relative to the anchor device.
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公开(公告)号：US10731460B2
公开(公告)日：2020-08-04
申请号：US14263893
申请日：2014-04-28
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Adriaan Gisolf , Kai Hsu , Li Chen , Beatriz Barbosa
Abstract: A downhole tool is operated to pump fluid from a subterranean formation while obtaining fluid property measurements pertaining to the pumped fluid. The downhole tool is in communication with surface equipment located at the wellsite surface. The downhole tool and/or surface equipment is operated to estimate a first linear, exponential, logarithmic, and/or other relationship between compressibility and pressure of the pumped fluid based on the fluid property measurements. The downhole tool and/or surface equipment may also be operated to estimate a second linear, exponential, logarithmic, and/or other relationship between formation volume factor and pressure of the pumped fluid based on the first relationship. The downhole tool and/or surface equipment may also be operated to measure and correct optical density of the pumped fluid based on the first relationship.
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Patent Agency Ranking
公开(公告)号：US20210388722A1
公开(公告)日：2021-12-16
申请号：US17460923
申请日：2021-08-30
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Christopher Harrison , Youxiang Zuo , Christopher Albert Babin , Li Chen , Vinay K. Mishra , German Garcia , Abhishek Agarwal , Matthew T. Sullivan
Abstract: Methods for obtaining in-situ, multi-temperature measurements of fluid properties, such as saturation pressure and asphaltene onset pressure, are provided. In one example, a sample of formation fluid is obtained using a downhole acquisition tool positioned in a wellbore in a geological formation. The downhole acquisition tool may be stationed at a first depth in the wellbore that has an ambient first temperature. While stationed at the first depth, the downhole acquisition tool may test a first fluid property of the sample to obtain a first measurement point at approximately the first temperature. The downhole acquisition tool may be moved to a subsequent station at a new depth with an ambient second temperature, and another measurement point obtained at approximately the second temperature. From the measurement points, a temperature-dependent relationship of the first fluid property of the first formation fluid may be determined.
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公开(公告)号：US09557312B2
公开(公告)日：2017-01-31
申请号：US14177744
申请日：2014-02-11
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Adriaan Gisolf , Li Chen
CPC classification number: G01N33/2841 , E21B41/005 , E21B49/10 , G01N33/2835
Abstract: Methods and apparatus for operating a downhole tool within a wellbore adjacent a subterranean formation to pump contaminated fluid from the formation into the downhole tool while measuring first and second fluid properties of the contaminated fluid. The contaminated fluid comprises native fluid from the formation and a contaminant. The downhole tool is in communication with surface equipment located at surface. The downhole tool and/or surface equipment is operated to estimate a formation volume factor of the contaminated fluid based on at least one of the first and second fluid properties of the contaminated fluid. A linear relationship is then estimated between the first fluid property and a function that relates the first fluid property to the second fluid property and the estimated formation volume factor of the contaminated fluid. A fluid property of the contaminant is then estimated based on the estimated linear relationship.
Abstract translation: 在邻近地下地层的井筒内操作井下工具的方法和装置，以将污染的流体从地层泵送到井下工具中，同时测量污染流体的第一和第二流体性质。 受污染的流体包括来自地层的天然流体和污染物。 井下工具与位于表面的地面设备连通。 操作井下工具和/或表面设备以基于受污染流体的第一和第二流体性质中的至少一个来估计污染流体的地层容积系数。 然后在第一流体属性和将第一流体属性与第二流体性质和估计的污染流体的形成体积因子相关联的函数之间估计线性关系。 然后基于估计的线性关系来估计污染物的流体性质。
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公开(公告)号：US20170022809A1
公开(公告)日：2017-01-26
申请号：US15183090
申请日：2016-06-15
Applicant: Schlumberger Technology Corporation
Inventor： German Garcia , Hadrien Dumont , Vinay K. Mishra , Li Chen , Abhishek Agarwal , Cosan Ayan
CPC classification number: E21B49/088 , E21B49/10 , G01N21/31 , G01N21/94 , G01N33/24
Abstract: The present disclosure relates to a formation sampling method that includes disposing a downhole tool comprising a packer and an expandable probe within a wellbore. The method also includes performing pressure transient testing by setting the expandable packer and the probe to engage a wall of the wellbore and measuring a pressure response at the expandable packer and the probe while withdrawing formation fluid into the downhole tool through the expandable packer. The method further includes monitoring a contamination level of the formation fluid during the pressure transient testing, and performing formation sampling with the probe in response to determining that the monitored contamination level meets a predetermined threshold.
Abstract translation: 本公开涉及一种地层取样方法，其包括在井眼内设置包括封隔器和可扩张探针的井下工具。 该方法还包括通过将可膨胀封隔器和探头设置成接合井眼的壁并且在可膨胀封隔器和探针处测量压力响应，同时通过可膨胀封隔器将地层流体排入井下工具中来执行压力瞬态测试。 该方法还包括在压力瞬变测试期间监测地层流体的污染水平，并且响应于确定所监测的污染水平达到预定阈值，利用探针进行地层采样。
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公开(公告)号：US20240060398A1
公开(公告)日：2024-02-22
申请号：US18260053
申请日：2021-12-20
Applicant: Schlumberger Technology Corporation
Inventor： Bei Gao , Yen Han Shim , Li Chen , Jichao Chen , Wei Zhang , Huimin Cai , Chang Wei Qu
CPC classification number: E21B41/0099 , C09K8/035 , E21B49/0875 , E21B49/088 , E21B49/10
Abstract: This disclosure relates to techniques for determining a dissociation constant of a reservoir that includes methane hydrate and generating a methane hydrate production output that may be used to inform certain decisions related to processing a reservoir that includes the methane hydrate. In some embodiments, the techniques may include determining the dissociation constant using multiple pressures measured at different flowrates at time points from within a wellbore.
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公开(公告)号：US11105198B2
公开(公告)日：2021-08-31
申请号：US15087770
申请日：2016-03-31
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Christopher Harrison , Youxiang Zuo , Christopher Albert Babin , Li Chen , Vinay K. Mishra , German Garcia , Abhishek Agarwal , Matthew T. Sullivan
Abstract: Methods for obtaining in-situ, multi-temperature measurements of fluid properties, such as saturation pressure and asphaltene onset pressure include obtaining a sample of formation fluid using a downhole acquisition tool positioned in a wellbore in a geological formation. The downhole acquisition tool may be stationed at a first depth in the wellbore that has an ambient first temperature. While stationed at the first depth, the downhole acquisition tool may test a first fluid property of the sample to obtain a first measurement point at approximately the first temperature. The downhole acquisition tool may be moved to a subsequent station at a new depth with an ambient second temperature, and another measurement point obtained at approximately the second temperature. From the measurement points, a temperature-dependent relationship of the first fluid property of the first formation fluid may be determined.
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